Card index for telephone receivers



March 31. 1925.

A. M. RABJNOF I ,CARD} INDEX FOR TELEPHONE RECEIVERS Filed Nov. 20, 1924 ATTORNEY Patented Mar. 31, 1925.

UNITED STATES PATENT OFFICE- ABRAHAM M. RABINOF, OF NEW YORK, N. Y., ASSIGNOR TO ELBE CO*., INC., OF NEW YORK, N. Y.

FILE & BINDER CARD INDEX FOR TELEPHONE RECEIVERS.

Application filed November 20, 1924. Serial No. 751,003.

To all to/1.0m, it may concern:

Be it known that I, ABRAHAM M. RABINOF, a citizen of the United States, residing at New York, in the county of New York and Stateof New York, have invented certain new and useful Improvements in Card indexes for Telephone Receivers, of which the following is a specification.

This invention relates to telephone index devices of the class in which alphabetically marked cards, serving for telephone addresses, are arranged between covers and suspended from the mouthpiece of a telephone receiver.

As usually constructed, the back of the card index device is formed with a circular opening large enough to permit the free passage thereof onto the mouthpiece of the telephone receiver. VVhenthe index is thus suspended from the mouthpiece, it has the tendency to slip off the latter, when the receiver is tilted forwardly, while in use. To prevent this, a device has been introdnced, which consists of a clutch arm fixed to theirack cover of the index and extend ing downwardly from above around the mouthpiece. But such device has been found in'ipracticable for several reasons, among others, that the metal clutch is constantly in contact with the mouthpiece, which is undesirable, and also since the index'can freely slide on the mouthpiece, the frictional contact of the clutch with the latter produces objectionable scratching noises.

The object of this invention is to provide a construction, whereby the above mentioned drawbacks will be avoided.

With this and other objects in view, my invention consists in the construction, combination and arrangement of parts, as will be hereinafter fully described and defined .in the appended claims.

In the accon'ipanying drawing in which similar reference characters denote corresponding parts, Fig. 1 is a front elevation. of the index device; Fig. 2 a longitudinal section on line 2-2 of Fig. 1; Fig. 3 a rear elevation of said device, the lower part being broken otl; Fig. 4 a front elevation of a modified construction and Fig. 5 a longitudinal section on line 5 5 of Fig. 4.

a denotes the back of a card index formed with a circular opening I), whereby it is adapted to be slipped over the mouthpiece piece.

part of said opening, so that, while it'will permit the passage of the mouthpiece through said opening by forcing it through the obstructed portion of the latter, the in dex cannot accidentally slip off the mouth This resilient member may be in form of a simple spring coil and be attached by. rivets or the like on opposite sidesiofthe opening But insteadof riveting it to the index, I prefer to use the following construction: Arranged on the front face of the back of the index,- is a substantially Urshaped wire 11, whose longi tudinal portion is formed centrally with a loop 11 for the engagement of a rivet or the like 1:2, whereby it may be fixed to the back a. The vertically extending end portions 11 of said wire are curved substantially as shown to form loops on which perforated cards cl, constituting the index proper, are adapted to be strung in the usual-manner. The rear parts of said loops are passed through perforations a. of the back a and are bent upwardly, as at 11 The free ends of said upwardly bent parts 11 which terminate at points slightly above the lowest point of the periphery of the opening 6 and at opposite sides of the latter are bent to form hooks 11 to which the resilient member or spring 10 can be easily attached.

The means for holding the cards and the spring 10 can thus be made in one piece, and the construction, therefore, is greatly simplified. When the index is suspended from the mouthpiece of the telephone, the spring will extend across the bottom part of the inouthpiece and while it will not be in contact with it, will form a sufficient obstruction to pre vent the index from slipping off the mouthpiece.

The obstructing element can be easily attached to the hooks 11 of the wire 1.1 and replaced whenever lost or broken without the use of tools.

- Instead of using a separate spring 10, the free ends of the wire may be bent inwardly relative to the opening I) and curved substantially as at 13 in Fig. 4, so as to nor- Cil mally obstruct the opening b. When slipping the back av oi? the index over-the mouthpiece, the latter will spread the curved parts 13 apart, which, subsequently will be drawn back into obstructing position by their own spring force.

\Vhat I claim is 1. In a telephone card index having a back with an opening to lit ower the mouthpiece of a telephone receiver, a resilient obstructing element nea" the lower edge of said opening to prevent the index from slipping ii the mouthpiece, said element being adapted when said index is on said mouthpiece to be out of contact with the lat er.

2. In: a telephone card index having a back with an opening to lit over the ntiouthpiece of a telephone receiver, a member iixed to the back of saidindex "formed with iorwardiy bulging loops to hold the index cards and the free ends of which are passed through the back cover of said index, and resilient means on said member serving to obstruct the lower part of said opening to prevent the index from slipping off said mouthpiece.

In a telephone card index having a back cover with an opening to fit over the mouthpiece ot a telephone receiver, an attachment consisting of a member fixed to the front face of said cover and formed with forwardly bulging loops for the suspension of the index cards, the free ends of said loops being passed through said coverand extended to points somewhat above the bottom edge of said opening, and a spring coil attached to said free ends to extend across said opening and obstruct the same, so as to prevent the slipping off oi said index from saidn'iouthpiece.

e. In a telephone card index having a back coverwith an opening to [it over the mouthpiece of a telephone receiver, an at taelimentconsisting of a member of resilient materialfixed to the front face of said cover and formed with forwardly bulging loops for the suspension oi the index cards, the free ends oi said loops being passed through said cover and extended to. obstruct said opening and prevent the index from slipping oti' said n'iouthpiece.

In testimony whereof I aflix my signature in presence oi." two witnesses.

ABRAHAIVI M. RABINOF.

Vitnesses:

JAs. (i. OIIDMANY, JOSEPH T. MoMAHox. 

